You’ll need a few balls, some coins or ball marker and an area to putt 15′ to 45′ Place a mark down and then pitch the coin and that will be your target. Roll the ball as close to the coin as you can and then mark with a ball marker or different coin. Repeat 10-20 reps. Look at your dispersion left to right, and front to back. Better yet, measure the distances and repeat or change distances.

Golf Visualization Checklist: Pre-Shot Routine for Confidence | Brad Pluth, PGA
Golf gets easier when your mindset does the heavy lifting. A good swing without a good picture is guesswork; a clear picture
